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Finding the Fourth Proportional to 636,316.58, 954,474.88 and 262,329.86

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Solution

The fourth proportional to 636,316.58, 954,474.88 and 262,329.86 is: 393,494.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,316.58 : 954,474.88 = 262,329.86 : x
  2. Step 2: Convert to fraction form
    636,316.58/954,474.88 = 262,329.86/x
  3. Step 3: Cross multiply
    636,316.58x = 954,474.88 × 262,329.86
  4. Step 4: Simplify right side
    636,316.58x = 250,387,261,643.92
  5. Step 5: Solve for x
    x = 250,387,261,643.92/636,316.58
  6. Step 6: Final answer
    x = 393,494.79

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.